| Azerbajdzjan Int. - Mixed dubbel | 2019/06/09 12:00 | Lamsfuss/Herttrich v Delrue/Gicquel | L | 1-2 |
| Azerbajdzjan Int. - Mixed dubbel | 2019/06/09 06:00 | Lamsfuss/Herttrich v Alimov/Davletova | W | 2-0 |
| Azerbajdzjan Int. - Mixed dubbel | 2019/06/08 13:00 | Lamsfuss/Herttrich v Chrisnanta/Tan | W | 2-0 |
| Sudirman Cup - Mixed dubbel | 2019/05/22 05:00 | Lamsfuss/Herttrich v Hurlburt-Yu/Wu | W | 2-0 |
| Sudirman Cup - Mixed dubbel | 2019/05/20 10:00 | Lamsfuss/Herttrich v Chrisnanta/Tan | W | 2-0 |
| New Zealand Open XD | 2019/05/03 05:10 | Wang/Cheng v Lamsfuss/Herttrich | L | 2-1 |
| New Zealand Open XD | 2019/05/02 05:20 | Lamsfuss/Herttrich v Gondo/Kurihara | W | 2-1 |
| New Zealand Open XD | 2019/04/30 02:00 | Lamsfuss/Herttrich v Leung/Somerville | W | 2-0 |
| Sudirman Cup - Mixed dubbel | 2019/05/23 05:00 | Piek/Tabeling v Herttrich/Seidel | W | 2-1 |
| Sudirman Cup - Mixed dubbel | 2019/05/21 10:00 | Piek/Tabeling v Labar/Tran | W | 2-0 |
| Sudirman Cup - Mixed dubbel | 2019/05/20 03:00 | Piek/Tabeling v Shu/Obanana | W | 2-0 |
| Brazil Int. - Mixed dubbel | 2019/05/05 13:00 | Arends/Seinen v Piek/Tabeling | W | 1-2 |
| Brazil Int. - Mixed dubbel | 2019/05/04 13:00 | Yakura/Tsai v Piek/Tabeling | W | 0-2 |
| German Open - Mixed dubbel | 2019/03/02 18:00 | Piek/Tabeling v Faizal/Emanuelle Widjaja | L | 1-2 |
| German Open - Mixed dubbel | 2019/03/01 19:40 | Watanabe/Higashino v Piek/Tabeling | W | 1-2 |
| German Open - Mixed dubbel | 2019/02/28 12:10 | Piek/Tabeling v Kaneko/Matsumoto | W | 2-0 |